Friction-clutch.



R. 0. HENDRIGKSUN. PRIGTION CLUTCH. ABPLIOA'LIONPILED JULY 3, 1911.

i claims.

` The clutch 1s particularly 'designed for I use in tract1on engines and 1n connection' v UNITED sTATEs PATENT OFFICE vROBERT o. HENDRICKsoN, or roRTI-.alvnolaiatroiv, AsskIoLNoR, `BY MESN'E ASSIGN.' A MENTS, ToWALLIs TRACTOR COMPANY, oF RACINE, WIsCoNsLLN, a vCo1a1 ort.1.-.T1o1\r orv WISCONSIN.

at Portland,` in the county lof Multnomah and State of Oregon, have invented new and useful Improvements in Friction-Clutches,

of which the 'following is a specification.

This invention relates to friction clutches, and consists in eer-tain improvements in the construction thereof as will be hereinafter fully described andl pointed out in the with internal combustion motors, and in this relation it is spring actuated to throw the clutch into engagement and leverv operated to `throw the clutch out of engagement.

The invention is illustrated 'in the accompanymg drawmgs as follows:

` Figure l shows a side elevation of the yclutch. Fig. 2a central 'section-through the clutch, the line of section varying-to give a section of each of the details.

In the operation of the clutch, either mein ber may be the driven member or the driving member. For the convenience of description, it will be assumed that the shaft 1is the driving shaft and the shaft 2 the driven shaft. A'web 3 is fixed on the shaft 1 by being secured by bolts 5 to a shoulder 4 on said shaft.' The web 3 is provided with an annular ange3". A driving friction plate 6 is secured to the web 3 within the flange 3 by means of bolts 7. The plate 6 is provided with the ears 6 for this purpose. The bolts are provided withthe ends 8 and springs 10 are arranged between the ends and plate 6 so as to relieve the parts from any warping strain. The plate 6 has a series of perforations and the friction blocks 11 are arranged in theseperforations. A

driven friction plate 12 having the friction surfacesV 13 engages the friction blocks 11 at one side 'of the plate 6. The plate 12 is carried by a hub 14. f The hub is fixed on the -shaft'2by means of a keyl 15 and is pro# vided with the bushings 16 forming a bearing on the -shaft 1. A ball bearing-washer 17 is arranged between the shafts 1 and 2.y The bearing formed by the bushing 16 is lubricated from a 'grease cup 19 which is connected with the bearing through the pipe 18. A friction plate 20 is arranged at t e opposite side of the plate 6 from the .plate Specification ofLetters Patent.

Applicatill led July 3, 1911. Serial'NO. 636,813.

y FRICTIoi-CLUTCH.

12. It has a series of'fperforations' 21 Patented Julie 23, 1914.

through which bolts 22y extend and aref screwed into the plate 6'.- Nuts 23 arescrewed on to the bolts 22 and springs 25 are inter,-

posed between'the nuts 23 and the plate 20.`

These springs throw the clutch into engagement and are of suici'ent power for this purpose. Push pins 26 .are screwed into the screw threaded openings v27 in the plate 12 andare locked in position byl the nuts 28.

vThese push pins extend into the ears' 29 on the plate 20. .The ears have perforations through them extending in "a circumferential dlrection' and pins 3l are journaled in the perforations 30. The pinsare attened at 32 and the push pins 26 engage t ese flat-A tened surfaces at one sideof the'pin. By rocking' the pins 31, the attened portions operate as a-crank on the push pins 26 and thus separate the friction plates 12 and 20. Levers 33 aregfixedv onthe. pins 31. These levers extend to the sides of the hub 14, the

levers being" arranged tangehtially to the` I head. They are operated u on bythe surface 34-at the end of the shding Vsleeve 35. The sleeve 35 has the annular shoulder 36 on which is arranged the strap 37. The strap is provided with the usual ins 38 by means of which the sleeve 35 may be operated.

It will be readily observed that when the sleeve 35 is forced toward the right, as shown in Fig. 2, the levers 33 are rocked so as to swingthe attened surfaces 32 against vthe push pins-26. The effect of this is to separate the plates l2 and 20. Upon the rclease of the sleeve 35, thesprings 25 operating' through the bolts 22 pull the plates 12 and.

20 toward each other and against the friction blocks 1l, thus setting the clutch.

What I claim as new is:

v v1. In a'friction clutch, the combination of a driving friction plate, driven friction plates at opposite sides of the drivingplate,

'means for impelling the driven plates to ward each. other and toward the intermeone ofthe driven p ates and extending past the driving plate, c lindrical rock shafts journaled in the vot er driven plate and 4cut away to form bearing surfaces `for the 'diatedriving plate push pins mounted on 2. In a friction clutch,4 the cizombinationv of-a driving plate, a pair of driven plates upon opposite sides thereof, means for normally forcing the driven plates toward each other and into` engagement with the driving plate, bearings formed `on one of the driving plates, oscillatory shafts mounted in said bearings, arms on said shaft, means for engaging said arms to oscillate the shafts, said shafts being cut away with in vtheir bearings to form eccentric surfaces, push pins. mounted upon the' other driven late and extending past the driving 4plate t. :rough openings in the shaft bearings and into engagement withthe cutaway portions of said shaft whereby oscillation oli' the shaft will force apart the driven plates.

3. In a friction clutch, a drivin tion plate, a driving shaft by Whic` said )late is c ried, a driven shaft, a driven iriction plate mount-ed thereon, pins extending from said driven friction plate,l an' annular friction plate slidably mounted on said pins, springs forcing said annular plate 1 and driven plate toward each other, cylinfrica driven shaft said main. driven plate extending beyond the driving plate, an annular friction plate slidable upon sald pins, means normally forcing said annular plate and main driven plate toward each other and into contact with the driving plate and rock shafts having eccentric portions engaging said pins, arms on said rock shafts and a collar movable axially ofthe shafts for engaging.. said armsl to force thev driven friction plates apart.

5, A driving shaft, adriven shaft, a'

wheel upon the driving shaft, a driving friction plate mounted on the wheel, spring means forcing the driving friction plate fi'ntorcontact with said wheel, a pair of driven friction plates mountedon the driven shaft and arranged on opposite sides of said-driving friction plate, springs fore'- ing said driven friction plates toward each other and into engagementv with the driving plate, pins mounted on one of said driven plates, rock shafts journaled on the other of said driven friction plates and having eccentric portions engaging said pins, arms on said rock shafts and means movable axially of the shafts engaging said larms for rocking the .shafts and separating the driven friction plates against the pressure of the springs.

In testimony whereof I have hereunto set my hand in the presence -of two subscribing witnesses.

ROBERT O; HENDRICKSON.

Witnesses AH. V. CARPENTER, ELIJAH CoRBn'rr. 

